This data call returns details of reverse DNS delegations for IP prefixes in the RIPE region.

https://stat.ripe.net/data/reverse-dns/data.<format>?<parameters> 

e.g. https://stat.ripe.net/data/reverse-dns/data.json?resource=193.0.0.0/21

Parameters

Key	Value	Info	Required
resource	Prefix for the query	-	YES

Output

Data

Key	Info
delegations	contains domain objects found in the RIPE Whois database related to this prefix (either exact match, more or less-specific) representing reverse delegated zones. Each line is described as "key" and "value" pair.
query_time	Holds the time the query was carried out
resource	Defines the resource used for the query

Example

"data": {
    "delegations": [
        [
            {
                "key": "domain",
                "value": "46.213.in-addr.arpa"
            },
            {
                "key": "descr",
                "value": "Reverse delegation for Reverse delegation for UPC.nl"
            },
            {
                "key": "admin-c",
                "value": "CBHM-RIPE"
            },
            {
                "key": "tech-c",
                "value": "CBHM-RIPE"
            },
            {
                "key": "zone-c",
                "value": "CBHM-RIPE"
            },
            {
                "key": "nserver",
                "value": "ns3.chello.at"
            },
            {
                "key": "nserver",
                "value": "ns01.chello.com"
            },
            {
                "key": "nserver",
                "value": "ns02.chello.com"
            },
            {
                "key": "nserver",
                "value": "ns.ripe.net"
            },
            {
                "key": "mnt-by",
                "value": "UPCNL-MNT"
            },
            {
                "key": "source",
                "value": "RIPE"
            }
        ]
    ],
    "query_time": "2012-06-01T15:05:00",
    "resource": "213.46.32.0/20"
}